package com.lfl.util;

import java.util.Locale;

/**
 * @program: JavaEE-EFD
 * @description: 二进制转16进制类
 * @author: fengjd
 * @create: 2022-07-28 10:38
 **/
public class Byte2HexUtil {

    public static String parseByte2HexStr(byte[] buf) {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < buf.length; i++) {
            String hex = Integer.toHexString(buf[i] & 0xff);
            if (hex.length() == 1) {
                hex = '0' + hex;
            }
            sb.append(hex.toUpperCase());
        }

        return sb.toString();
    }

    public static byte[] parseHexStr2Bytes(String hexStr) {
        if (hexStr.length() < 1) {
            return null;
        }
        byte[] result = new byte[hexStr.length() / 2];
        for (int i = 0; i < hexStr.length() / 2; i++) {
            int hign = Integer.parseInt(hexStr.substring(i * 2, i * 2 + 1), 16);
            int low = Integer.parseInt(hexStr.substring(i * 2 + 1, i * 2 + 2), 16);
            result[i] = (byte)(hign*16 +low);
        }
        return result;
    }


}
